mke2fs.8: Fix man page to use hyphens instead of minus signs for options

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
diff --git a/misc/mke2fs.8.in b/misc/mke2fs.8.in
index daf4d79..d638286 100644
--- a/misc/mke2fs.8.in
+++ b/misc/mke2fs.8.in
@@ -576,9 +576,9 @@
 should be set in the newly created filesystem, the
 resulting filesystem may not be supported by the requested
 .IR fs-type .
-(e.g., "\fBmke2fs -t ext3 -O extents /dev/sdXX\fR" will create a
+(e.g., "\fBmke2fs \-t ext3 \-O extents /dev/sdXX\fR" will create a
 filesystem that is not supported by the ext3 implementation as found in
-the Linux kernel; and "\fBmke2fs -t ext3 -O ^has_journal /dev/hdXX\fR"
+the Linux kernel; and "\fBmke2fs \-t ext3 \-O ^has_journal /dev/hdXX\fR"
 will create a filesystem that does not have a journal and hence will not
 be supported by the ext3 filesystem code in the Linux kernel.)
 .TP